Remove, as a hat (4)
I believe the answer is:
doff
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">remove as a hat</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for doff that I've seen before include "Take off (clothing) - remove (hat)" , "Take off hat as mark of respect" , "shed" , "Remove, hat say" , "Lift (one's hat)" .)